1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Pressure vessels, wall thickness

  1. Dec 4, 2013 #1
    20 m3 of gas at a pressure of 25 bar is to be stored in a cylindrical
    pressure vessel 2 m long. Given the following information :
    The yield strength of the vessel material is 14,000 psi
    If a factor of safety of 5 is to be used, determine:

    (a) Whether the vessel should be treated as a thin or thick cylinder.
    (b) The wall thickness required for the pressure vessel

    The information I have gathered to date is

    14,000psi= 14,000 / 0.14503773773=9.6526602 x 10^6 Pa
    Pressure of gas=25bars-2500kpa=2.5 x 10^6
    r=√v/∏h=1.784 Metres
    D=2r=3.568 Metres

    These are all the values I have at the moment. Hopefully as I continue to try and solve it solve kind soul may see this post and give me a nudge in the right direction. Many thanks in advance....
  2. jcsd
  3. Dec 4, 2013 #2
    Hoop stress= yield strength / safety factor = 19.3 x 10^6
    thickness= pr/hoop stress = 0.231m =231mm
    so I conclude that the cylinder is thick walled and is a 7.222
    and the minimum wall thickness must be 231mm

    Could someone tell if this is correct and answers the questions suitably please
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted